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4. Seismology

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  1. Content type: Full paper

    The Himalayan collision zone experiences many seismic activities with large earthquakes occurring at certain time intervals. The damming of the proto-Bagmati River as a result of rapid mountain-building proces...

    Authors: Subeg M. Bijukchhen, Nobuo Takai, Michiko Shigefuji, Masayoshi Ichiyanagi, Tsutomu Sasatani and Yokito Sugimura

    Citation: Earth, Planets and Space 2017 69:97

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  2. Content type: Full paper

    Most modern seismic codes account for site effects using an amplification factor (AF) that modifies the rock acceleration response spectra in relation to a “site condition proxy,” i.e., a parameter related to ...

    Authors: Ahmed Boudghene Stambouli, Djawad Zendagui, Pierre-Yves Bard and Boumédiène Derras

    Citation: Earth, Planets and Space 2017 69:99

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  3. Content type: Full paper

    As observational evidence of 3-D microtremor horizontal-to-vertical spectral ratios (MHVRs), previous studies have shown that a significant directional dependency is observed in and around Uji campus, Kyoto Un...

    Authors: Shinichi Matsushima, Hiroyuki Kosaka and Hiroshi Kawase

    Citation: Earth, Planets and Space 2017 69:96

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  4. Content type: Letter

    Seismic activity occurred off western Kyushu, Japan, at the northern end of the Okinawa Trough on May 6, 2016 (14:11 JST), 22 days after the onset of the 2016 Kumamoto earthquake sequence. The area is adjacent...

    Authors: Taro Okamoto, Hiroshi Takenaka, Takeshi Nakamura and Tatsuhiko Hara

    Citation: Earth, Planets and Space 2017 69:88

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  5. Content type: Full paper

    The Ryukyu (Nansei-Shoto) island arc-trench system, southwest of Japan, is formed by the subduction of the Philippine Sea (PHS) plate. Among the subduction zones surrounding the Japan Islands, the Ryukyu arc-t...

    Authors: Azusa Nishizawa, Kentaro Kaneda, Mitsuhiro Oikawa, Daishi Horiuchi, Yukari Fujioka and Chiaki Okada

    Citation: Earth, Planets and Space 2017 69:86

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  6. Content type: Full paper

    We carried out statistical evaluations of two probability density functions for the microboudin palaeopiezometer using the Akaike information criterion (AIC) and the cross-validation (CV) technique. In terms o...

    Authors: Tarojiro Matsumura, Tatsu Kuwatani and Toshiaki Masuda

    Citation: Earth, Planets and Space 2017 69:83

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  7. Content type: Express Letter

    We have analyzed the spatial variation in coda Q in the northeastern part of a high strain rate zone, the Niigata–Kobe Tectonic Zone (NKTZ), to investigate the cause of the high strain rate by correlating coda Q ...

    Authors: Masanobu Dojo and Yoshihiro Hiramatsu

    Citation: Earth, Planets and Space 2017 69:76

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  8. Content type: Letter

    We present the results of relocating 17,544 hypocenters determined from data recorded during the 2016 Kumamoto Earthquake sequence, during the interval between April 14, 2016, and August 31, 2016. For this, w...

    Authors: Tomoko Elizabeth Yano and Makoto Matsubara

    Citation: Earth, Planets and Space 2017 69:74

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  9. Content type: Express Letter

    An earthquake of JMA magnitude 6.5 (foreshock) hit Kumamoto Prefecture, Japan, at 21:26 JST on April 14, 2016. Subsequently, an earthquake of JMA magnitude 7.3 (main shock) hit Kumamoto and Oita Prefectures a...

    Authors: Yoshiya Hata, Masayuki Yoshimi, Hiroyuki Goto, Takashi Hosoya, Hitoshi Morikawa and Takao Kagawa

    Citation: Earth, Planets and Space 2017 69:72

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  10. Content type: Full paper

    In order to clarify the origin of aftershocks, we precisely analyze the hypocenters and focal mechanisms of the aftershocks following the 2000 Western Tottori Earthquake, which occurred in the western part of ...

    Authors: Yohei Yukutake and Yoshihisa Iio

    Citation: Earth, Planets and Space 2017 69:68

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  11. Content type: Frontier letter

    A simple and efficient finite-difference scheme is developed to calculate seismic wave propagation in a partial spherical shell model of a three-dimensionally (3-D) heterogeneous global Earth structure for mod...

    Authors: Hiroshi Takenaka, Masanao Komatsu, Genti Toyokuni, Takeshi Nakamura and Taro Okamoto

    Citation: Earth, Planets and Space 2017 69:67

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  12. Content type: Letter

    In this study, we estimated source process of the 2016 Kumamoto earthquake from strong-motion data by using the multiple-time window linear kinematic waveform inversion method to discuss generation of strong m...

    Authors: Kunikazu Yoshida, Ken Miyakoshi, Kazuhiro Somei and Kojiro Irikura

    Citation: Earth, Planets and Space 2017 69:64

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  13. Content type: Full paper

    Post-seismic investigations repeatedly indicate that structures having frequencies close to foundation soil frequencies exhibit significantly heavier damages (Caracas 1967; Mexico 1985; Pujili, Ecuador 1996; L...

    Authors: Christelle Salameh, Pierre-Yves Bard, Bertrand Guillier, Jacques Harb, Cécile Cornou, Jocelyne Gérard and Michelle Almakari

    Citation: Earth, Planets and Space 2017 69:60

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Page 3 of 11

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